private static AggregationResponse GetAggregation(AggregationRequest aggregationRequest, IDictionary <string, Filter> valueFilters, IndexSearcher searcher, bool sortValues, int?maxValuesCount, ICollection <string> availableFields)
{
AggregationResponse result = null;
if (aggregationRequest != null)
{
if (valueFilters != null)
{
var commonFilter = LuceneSearchFilterBuilder.GetFilterRecursive(aggregationRequest.Filter, availableFields);
var values = valueFilters.Select(kvp => GetAggregationValue(kvp.Key, kvp.Value, commonFilter, searcher))
.Where(v => v != null);
if (sortValues)
{
values = values
.OrderByDescending(v => v.Count)
.ThenBy(v => v.Id);
}
if (maxValuesCount > 0)
{
values = values.Take(maxValuesCount.Value);
}
result = new AggregationResponse
{
Id = aggregationRequest.Id ?? aggregationRequest.FieldName,
Values = values.ToArray(),
};
}
}
return(result);
}
private static Filter GetFilters(SearchRequest request, ICollection <string> availableFields)
{
return(LuceneSearchFilterBuilder.GetFilterRecursive(request.Filter, availableFields));
}